DictionaryadverbGrammatical modifier
noun

adverb

AD-vurb/ˈædvɜːrb/

A word that modifies a verb, adjective, another adverb, or a whole clause.

In “the rabbit runs swiftly,” the adverb describes its speed.

A rabbit dashes swiftly while a slow tortoise walks nearby, contrasting how actions occur; a small blank word tile beside the motion strokes.
Etymology

Literally “that which is added to a verb,” the name describes a word that limits or extends a verb’s meaning. The grammatical category also includes words qualifying adjectives and other adverbs.

In context

The Nature of Writing0:50
Most of the time an adverb is going to modify a verb, so a verb is one of the things it modifies.
Introduction to Adverbs | Parts of Speech | The Nature of Writing

More examples

  • An adverb can modify an adjective as well as a verb.
  • She moves the adverb to change the sentence's emphasis.
  • Not all adverbs end in the letters “ly.”

Forms

adverb · adverbs

adverbial adjective — Serving the grammatical role of an adverb.

Similar words

modifier
Includes words and phrases with several different grammatical roles.
adjective
Usually modifies a noun rather than a verb or clause.